Basically copy coupon, view price history or create e-mail price alert. What is the best price?
180-degree wide view, 1080p high definition, Working temperature: -10 – 40 degree Celsius, Input voltage: 5V 1A
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($35.59): vipupgrade8
2. ($37.59): 5AQCAM
3. ($37.99): smartbuy
4. ($37.99): 3AQCAM
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Mijia Aqara Smart IP Camera.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).